/**
 * Copyright (C) BFH www.bfh.ch 2011
 * Code written by: Patrick Dobler, Marc Folly
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package ch.bfh.ti.kybernetik.lego.ki;

/**
 * {@link RoboterKI} utility functions
 * 
 */
class RoboterKIUtils {

	/**
	 * Calculates the Motor Speed proportionally value according to the given
	 * intensity parameter
	 * 
	 * @param min
	 *            minimal value that the roboter light sensor is able to detect
	 * @param max
	 *            maximal value that the roboter light sensor is able to detect
	 * @param lightIntensity
	 * @return
	 */
	public static int calculateMotorSpeedProportional(int min, int max, int lightIntensity) {
		if (lightIntensity < min)
			lightIntensity = min;
		if (lightIntensity > max)
			lightIntensity = max;
		return lightIntensity - min;
	}

	/**
	 * Calculates the Motor Speed inverse-proportionally value according to the
	 * given intensity parameter
	 * 
	 * @param min
	 *            minimal value that the roboter light sensor is able to detect
	 * @param max
	 *            maximal value that the roboter light sensor is able to detect
	 * @param lightIntensity
	 * @return
	 */
	public static int calculateMotorSpeedInverseProportioanl(int min, int max, int lightIntensity) {
		if (lightIntensity < min)
			lightIntensity = min;
		if (lightIntensity > max)
			lightIntensity = max;
		return max - lightIntensity;
	}

}
